Investigation of the Steady-State Response of a Dual-Rotor System With Inter-Shaft Squeeze Film Damper
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In this article, the authors presented an analysis of the steady-state unbalance response of a dual-rotor gas turbine engine with a flexible intershaft squeeze film damper using a simplified transfer matrix method.Abstract:
This paper presents an analysis of the steady-state unbalance response of a dual-rotor gas turbine engine with a flexible intershaft squeeze film damper using a simplified transfer matrix method. The simplified transfer matrix method is convenient for the evaluation of the critical speed and response of the rotor system with various supports, shaft coupling, intershaft bearing, etc.The steady-state unbalance response of the rotor system is calculated for different shaft rotation speeds. The damping effects of an intershaft squeeze film damper with different radial clearances under various levels of rotor unbalance are investigated.Copyright © 1985 by ASMEread more
Citations
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Journal ArticleDOI
Nonlinear vibrations of a dual-rotor-bearing-coupling misalignment system with blade-casing rubbing
TL;DR: In this article, a dual-rotor-bearing-coupling misalignment system with blade-casing rubbing is investigated based on numerical simulation and experimental measurement, and the results reveal the nonlinear vibration characteristics of the dualrotor bearing-Coupling system with local blade-case rubbing fault.
Journal ArticleDOI
The applications of POD method in dual rotor-bearing systems with coupling misalignment
Kuan Lu,Kuan Lu,Yulin Jin,Yulin Jin,Panfeng Huang,Fan Zhang,Haopeng Zhang,Chao Fu,Yushu Chen +8 more
TL;DR: In this paper, the proper orthogonal decomposition (POD) method is applied to the dimension reduction of dual rotor-bearing experiment rig which is similar to an aero-engine rotor.
Journal ArticleDOI
Nonlinear thermal behaviors of the inter-shaft bearing in a dual-rotor system subjected to the dynamic load
Peng Gao,Yushu Chen,Lei Hou +2 more
TL;DR: In this paper, the authors proposed a new theoretical method to investigate the thermal behaviors of the inter-shaft bearing considering the nonlinear dynamic characteristics of a dual-rotor system by combining heat transfer and nonlinear dynamics.
Patent
Stable intershaft squeeze film damper
TL;DR: In this article, a dual-shaft rotating assembly with a stable intershaft squeeze film damper for reducing vibration is described, where the inner and outer rings are maintained stationary by squirrel cages coupled to the housing.
Journal ArticleDOI
Analytical Analysis for the Nonlinear Phenomena of a Dual-Rotor System at the Case of Primary Resonances
Peng Gao,Lei Hou,Yushu Chen +2 more
TL;DR: In this article, the authors proposed an analytical method to study the nonlinear phenomena of a simple dual-rotor system in the case of primary resonances by considering nonlinearities of the inter-shaft bearing as a nonlinear spring.
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